2 * include/net/devlink.h - Network physical device Netlink interface
3 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 #ifndef _NET_DEVLINK_H_
12 #define _NET_DEVLINK_H_
14 #include <linux/device.h>
15 #include <linux/slab.h>
16 #include <linux/gfp.h>
17 #include <linux/list.h>
18 #include <linux/netdevice.h>
19 #include <net/net_namespace.h>
20 #include <uapi/linux/devlink.h>
25 struct list_head list;
26 struct list_head port_list;
27 struct list_head sb_list;
28 struct list_head dpipe_table_list;
29 struct devlink_dpipe_headers *dpipe_headers;
30 const struct devlink_ops *ops;
33 char priv[0] __aligned(NETDEV_ALIGN);
37 struct list_head list;
38 struct devlink *devlink;
41 enum devlink_port_type type;
42 enum devlink_port_type desired_type;
48 struct devlink_sb_pool_info {
49 enum devlink_sb_pool_type pool_type;
51 enum devlink_sb_threshold_type threshold_type;
55 * struct devlink_dpipe_field - dpipe field object
57 * @id: index inside the headers field array
59 * @mapping_type: mapping type
61 struct devlink_dpipe_field {
64 unsigned int bitwidth;
65 enum devlink_dpipe_field_mapping_type mapping_type;
69 * struct devlink_dpipe_header - dpipe header object
71 * @id: index, global/local detrmined by global bit
73 * @fields_count: number of fields
74 * @global: indicates if header is shared like most protocol header
77 struct devlink_dpipe_header {
80 struct devlink_dpipe_field *fields;
81 unsigned int fields_count;
86 * struct devlink_dpipe_match - represents match operation
87 * @type: type of match
88 * @header_index: header index (packets can have several headers of same
89 * type like in case of tunnels)
91 * @fieled_id: field index
93 struct devlink_dpipe_match {
94 enum devlink_dpipe_match_type type;
95 unsigned int header_index;
96 struct devlink_dpipe_header *header;
97 unsigned int field_id;
101 * struct devlink_dpipe_action - represents action operation
102 * @type: type of action
103 * @header_index: header index (packets can have several headers of same
104 * type like in case of tunnels)
106 * @fieled_id: field index
108 struct devlink_dpipe_action {
109 enum devlink_dpipe_action_type type;
110 unsigned int header_index;
111 struct devlink_dpipe_header *header;
112 unsigned int field_id;
116 * struct devlink_dpipe_value - represents value of match/action
119 * @mapping_value: in case the field has some mapping this value
120 * specified the mapping value
121 * @mapping_valid: specify if mapping value is valid
122 * @value_size: value size
126 struct devlink_dpipe_value {
128 struct devlink_dpipe_action *action;
129 struct devlink_dpipe_match *match;
131 unsigned int mapping_value;
133 unsigned int value_size;
139 * struct devlink_dpipe_entry - table entry object
140 * @index: index of the entry in the table
141 * @match_values: match values
142 * @matche_values_count: count of matches tuples
143 * @action_values: actions values
144 * @action_values_count: count of actions values
145 * @counter: value of counter
146 * @counter_valid: Specify if value is valid from hardware
148 struct devlink_dpipe_entry {
150 struct devlink_dpipe_value *match_values;
151 unsigned int match_values_count;
152 struct devlink_dpipe_value *action_values;
153 unsigned int action_values_count;
159 * struct devlink_dpipe_dump_ctx - context provided to driver in order
162 * @cmd: devlink command
164 * @nest: top attribute
167 struct devlink_dpipe_dump_ctx {
168 struct genl_info *info;
169 enum devlink_command cmd;
175 struct devlink_dpipe_table_ops;
178 * struct devlink_dpipe_table - table object
181 * @size: maximum number of entries
182 * @counters_enabled: indicates if counters are active
183 * @counter_control_extern: indicates if counter control is in dpipe or
185 * @table_ops: table operations
188 struct devlink_dpipe_table {
190 struct list_head list;
193 bool counters_enabled;
194 bool counter_control_extern;
195 struct devlink_dpipe_table_ops *table_ops;
200 * struct devlink_dpipe_table_ops - dpipe_table ops
201 * @actions_dump - dumps all tables actions
202 * @matches_dump - dumps all tables matches
203 * @entries_dump - dumps all active entries in the table
204 * @counters_set_update - when changing the counter status hardware sync
205 * maybe needed to allocate/free counter related
208 struct devlink_dpipe_table_ops {
209 int (*actions_dump)(void *priv, struct sk_buff *skb);
210 int (*matches_dump)(void *priv, struct sk_buff *skb);
211 int (*entries_dump)(void *priv, bool counters_enabled,
212 struct devlink_dpipe_dump_ctx *dump_ctx);
213 int (*counters_set_update)(void *priv, bool enable);
217 * struct devlink_dpipe_headers - dpipe headers
218 * @headers - header array can be shared (global bit) or driver specific
219 * @headers_count - count of headers
221 struct devlink_dpipe_headers {
222 struct devlink_dpipe_header **headers;
223 unsigned int headers_count;
227 int (*port_type_set)(struct devlink_port *devlink_port,
228 enum devlink_port_type port_type);
229 int (*port_split)(struct devlink *devlink, unsigned int port_index,
231 int (*port_unsplit)(struct devlink *devlink, unsigned int port_index);
232 int (*sb_pool_get)(struct devlink *devlink, unsigned int sb_index,
234 struct devlink_sb_pool_info *pool_info);
235 int (*sb_pool_set)(struct devlink *devlink, unsigned int sb_index,
236 u16 pool_index, u32 size,
237 enum devlink_sb_threshold_type threshold_type);
238 int (*sb_port_pool_get)(struct devlink_port *devlink_port,
239 unsigned int sb_index, u16 pool_index,
241 int (*sb_port_pool_set)(struct devlink_port *devlink_port,
242 unsigned int sb_index, u16 pool_index,
244 int (*sb_tc_pool_bind_get)(struct devlink_port *devlink_port,
245 unsigned int sb_index,
247 enum devlink_sb_pool_type pool_type,
248 u16 *p_pool_index, u32 *p_threshold);
249 int (*sb_tc_pool_bind_set)(struct devlink_port *devlink_port,
250 unsigned int sb_index,
252 enum devlink_sb_pool_type pool_type,
253 u16 pool_index, u32 threshold);
254 int (*sb_occ_snapshot)(struct devlink *devlink,
255 unsigned int sb_index);
256 int (*sb_occ_max_clear)(struct devlink *devlink,
257 unsigned int sb_index);
258 int (*sb_occ_port_pool_get)(struct devlink_port *devlink_port,
259 unsigned int sb_index, u16 pool_index,
260 u32 *p_cur, u32 *p_max);
261 int (*sb_occ_tc_port_bind_get)(struct devlink_port *devlink_port,
262 unsigned int sb_index,
264 enum devlink_sb_pool_type pool_type,
265 u32 *p_cur, u32 *p_max);
267 int (*eswitch_mode_get)(struct devlink *devlink, u16 *p_mode);
268 int (*eswitch_mode_set)(struct devlink *devlink, u16 mode);
269 int (*eswitch_inline_mode_get)(struct devlink *devlink, u8 *p_inline_mode);
270 int (*eswitch_inline_mode_set)(struct devlink *devlink, u8 inline_mode);
271 int (*eswitch_encap_mode_get)(struct devlink *devlink, u8 *p_encap_mode);
272 int (*eswitch_encap_mode_set)(struct devlink *devlink, u8 encap_mode);
275 static inline void *devlink_priv(struct devlink *devlink)
278 return &devlink->priv;
281 static inline struct devlink *priv_to_devlink(void *priv)
284 return container_of(priv, struct devlink, priv);
289 #if IS_ENABLED(CONFIG_NET_DEVLINK)
291 struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size);
292 int devlink_register(struct devlink *devlink, struct device *dev);
293 void devlink_unregister(struct devlink *devlink);
294 void devlink_free(struct devlink *devlink);
295 int devlink_port_register(struct devlink *devlink,
296 struct devlink_port *devlink_port,
297 unsigned int port_index);
298 void devlink_port_unregister(struct devlink_port *devlink_port);
299 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
300 struct net_device *netdev);
301 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
302 struct ib_device *ibdev);
303 void devlink_port_type_clear(struct devlink_port *devlink_port);
304 void devlink_port_split_set(struct devlink_port *devlink_port,
306 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
307 u32 size, u16 ingress_pools_count,
308 u16 egress_pools_count, u16 ingress_tc_count,
309 u16 egress_tc_count);
310 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index);
311 int devlink_dpipe_table_register(struct devlink *devlink,
312 const char *table_name,
313 struct devlink_dpipe_table_ops *table_ops,
314 void *priv, u64 size,
315 bool counter_control_extern);
316 void devlink_dpipe_table_unregister(struct devlink *devlink,
317 const char *table_name);
318 int devlink_dpipe_headers_register(struct devlink *devlink,
319 struct devlink_dpipe_headers *dpipe_headers);
320 void devlink_dpipe_headers_unregister(struct devlink *devlink);
321 bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
322 const char *table_name);
323 int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx);
324 int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
325 struct devlink_dpipe_entry *entry);
326 int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx);
327 int devlink_dpipe_action_put(struct sk_buff *skb,
328 struct devlink_dpipe_action *action);
329 int devlink_dpipe_match_put(struct sk_buff *skb,
330 struct devlink_dpipe_match *match);
334 static inline struct devlink *devlink_alloc(const struct devlink_ops *ops,
337 return kzalloc(sizeof(struct devlink) + priv_size, GFP_KERNEL);
340 static inline int devlink_register(struct devlink *devlink, struct device *dev)
345 static inline void devlink_unregister(struct devlink *devlink)
349 static inline void devlink_free(struct devlink *devlink)
354 static inline int devlink_port_register(struct devlink *devlink,
355 struct devlink_port *devlink_port,
356 unsigned int port_index)
361 static inline void devlink_port_unregister(struct devlink_port *devlink_port)
365 static inline void devlink_port_type_eth_set(struct devlink_port *devlink_port,
366 struct net_device *netdev)
370 static inline void devlink_port_type_ib_set(struct devlink_port *devlink_port,
371 struct ib_device *ibdev)
375 static inline void devlink_port_type_clear(struct devlink_port *devlink_port)
379 static inline void devlink_port_split_set(struct devlink_port *devlink_port,
384 static inline int devlink_sb_register(struct devlink *devlink,
385 unsigned int sb_index, u32 size,
386 u16 ingress_pools_count,
387 u16 egress_pools_count,
388 u16 ingress_tc_count,
394 static inline void devlink_sb_unregister(struct devlink *devlink,
395 unsigned int sb_index)
400 devlink_dpipe_table_register(struct devlink *devlink,
401 const char *table_name,
402 struct devlink_dpipe_table_ops *table_ops,
403 void *priv, u64 size,
404 bool counter_control_extern)
409 static inline void devlink_dpipe_table_unregister(struct devlink *devlink,
410 const char *table_name)
414 static inline int devlink_dpipe_headers_register(struct devlink *devlink,
415 struct devlink_dpipe_headers *
421 static inline void devlink_dpipe_headers_unregister(struct devlink *devlink)
425 static inline bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
426 const char *table_name)
432 devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
438 devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
439 struct devlink_dpipe_entry *entry)
445 devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
451 devlink_dpipe_action_put(struct sk_buff *skb,
452 struct devlink_dpipe_action *action)
458 devlink_dpipe_match_put(struct sk_buff *skb,
459 struct devlink_dpipe_match *match)
466 #endif /* _NET_DEVLINK_H_ */